Which of the following plant hormones is correctly matched with its function

Options

A. Abscisic acid-promotes seed dormancy
B. Gibberellic acid-promotes fruit ripening
C. Auxin-promotes leaf senescence
D. Cytokinin-promotes seed dormancy

Answer

To determine which plant hormone is correctly matched with its function, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Hormones and Their Functions**:
- **Option A**: Abscisic acid promotes seed dormancy.
- **Option B**: Gibberellic acid promotes fruit ripening.
- **Option C**: Auxin promotes leaf senescence.
- **Option D**: Cytokinin promotes seed dormancy.

2. **Analyze Option A**:
- Abscisic acid is known as a stress hormone and is indeed responsible for promoting seed and bud dormancy.
- **Conclusion**: Option A is correctly matched.

3. **Analyze Option B**:
- Gibberellic acid does not promote fruit ripening; instead, it delays the ripening process.
- **Conclusion**: Option B is incorrectly matched.

4. **Analyze Option C**:
- Auxin is primarily involved in processes such as apical dominance, shoot elongation, and vascular differentiation. It does not promote leaf senescence.
- **Conclusion**: Option C is incorrectly matched.

5. **Analyze Option D**:
- Cytokinins are known for promoting cell division (cytokinesis) and do not promote seed dormancy.
- **Conclusion**: Option D is incorrectly matched.

6. **Final Conclusion**:
- The only option that is correctly matched is **Option A**: Abscisic acid promotes seed dormancy.

### Answer:
The correct answer is **Option A**: Abscisic acid promotes seed dormancy.